Kalmar "smallmouth" yawanci ana amfani da ita don nufin wani nau'in kifi, musamman maƙarƙashiya. Bass ɗin smallmouth nau'in kifi ne na ruwa mai ɗanɗano wanda ke ɗan asalin Arewacin Amurka, kuma an san shi da launin ruwan-kore da ɗan ƙaramin bakinsa idan aka kwatanta da sauran nau'in bass. Hakanan ana iya amfani da kalmar "smallmouth" gabaɗaya don komawa ga duk wani abu da ke da alaƙa da samun ƙaramin baki ko ƙaramar buɗe baki.